25297103952 has 80 divisors (see below), whose sum is σ = 72818196480. Its totient is φ = 8408429568.

The previous prime is 25297103849. The next prime is 25297103957. The reversal of 25297103952 is 25930179252.

25297103952 is a `hidden beast` number, since 2 + 529 + 71 + 0 + 3 + 9 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25297103898 and 25297103907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25297103957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69553 + ... + 235439.

It is an arithmetic number, because the mean of its divisors is an integer number (910227456).

Almost surely, 2^25297103952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25297103952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36409098240).

25297103952 is an abundant number, since it is smaller than the sum of its proper divisors (47521092528).

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

25297103952 is a wasteful number, since it uses less digits than its factorization.

25297103952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166257 (or 166245 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 25297103952 in words is "twenty-five billion, two hundred ninety-seven million, one hundred three thousand, nine hundred fifty-two".