25494666072 has 32 divisors (see below), whose sum is σ = 63766046400. Its totient is φ = 8494304544.

The previous prime is 25494666053. The next prime is 25494666091. The reversal of 25494666072 is 27066649452.

It is an interprime number because it is at equal distance from previous prime (25494666053) and next prime (25494666091).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191458 + ... + 296049.

It is an arithmetic number, because the mean of its divisors is an integer number (1992688950).

Almost surely, 2^25494666072 is an apocalyptic number.

It is an amenable number.

25494666072 is an abundant number, since it is smaller than the sum of its proper divisors (38271380328).

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

25494666072 is a wasteful number, since it uses less digits than its factorization.

25494666072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489695 (or 489691 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 25494666072 in words is "twenty-five billion, four hundred ninety-four million, six hundred sixty-six thousand, seventy-two".