25497470400 has 168 divisors, whose sum is σ = 88573996080. Its totient is φ = 6399344640.

The previous prime is 25497470399. The next prime is 25497470407. The reversal of 25497470400 is 407479452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25497470407) 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 23 ways as a sum of consecutive naturals, for example, 74635 + ... + 237834.

Almost surely, 2^25497470400 is an apocalyptic number.

25497470400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25497470400 is an abundant number, since it is smaller than the sum of its proper divisors (63076525680).

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

25497470400 is a wasteful number, since it uses less digits than its factorization.

25497470400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312511 (or 312496 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 25497470400 in words is "twenty-five billion, four hundred ninety-seven million, four hundred seventy thousand, four hundred".