25408791452 has 36 divisors (see below), whose sum is σ = 49186629240. Its totient is φ = 11475852960.

The previous prime is 25408791437. The next prime is 25408791469. The reversal of 25408791452 is 25419780452.

It is a junction number, because it is equal to n+sod(n) for n = 25408791397 and 25408791406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91202 + ... + 243177.

Almost surely, 2^25408791452 is an apocalyptic number.

25408791452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25408791452 is a deficient number, since it is larger than the sum of its proper divisors (23777837788).

25408791452 is a wasteful number, since it uses less digits than its factorization.

25408791452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334562 (or 334549 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 25408791452 in words is "twenty-five billion, four hundred eight million, seven hundred ninety-one thousand, four hundred fifty-two".