25252274784 has 96 divisors (see below), whose sum is σ = 74806986240. Its totient is φ = 7388326400.

The previous prime is 25252274693. The next prime is 25252274791. The reversal of 25252274784 is 48747225252.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381672 + ... + 442919.

It is an arithmetic number, because the mean of its divisors is an integer number (779239440).

Almost surely, 2^25252274784 is an apocalyptic number.

25252274784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25252274784 is an abundant number, since it is smaller than the sum of its proper divisors (49554711456).

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

25252274784 is a wasteful number, since it uses less digits than its factorization.

25252274784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824644 (or 824636 counting only the distinct ones).

The product of its digits is 2508800, while the sum is 48.

The spelling of 25252274784 in words is "twenty-five billion, two hundred fifty-two million, two hundred seventy-four thousand, seven hundred eighty-four".