1025739252 has 18 divisors (see below), whose sum is σ = 2592840978. Its totient is φ = 341913072.

The previous prime is 1025739203. The next prime is 1025739259. The reversal of 1025739252 is 2529375201.

1025739252 is a `hidden beast` number, since 10 + 257 + 392 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 905047056 + 120692196 = 30084^2 + 10986^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 28492757 = 1025739252 / (1 + 0 + 2 + 5 + 7 + 3 + 9 + 2 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025739259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14246343 + ... + 14246414.

It is an arithmetic number, because the mean of its divisors is an integer number (144046721).

Almost surely, 2^1025739252 is an apocalyptic number.

1025739252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1025739252 is an abundant number, since it is smaller than the sum of its proper divisors (1567101726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025739252 is a wasteful number, since it uses less digits than its factorization.

1025739252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28492767 (or 28492762 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1025739252 is about 32027.1642828397. The cubic root of 1025739252 is about 1008.5071734397.

The spelling of 1025739252 in words is "one billion, twenty-five million, seven hundred thirty-nine thousand, two hundred fifty-two".