25154378328 has 16 divisors (see below), whose sum is σ = 62885945880. Its totient is φ = 8384792768.

The previous prime is 25154378309. The next prime is 25154378341. The reversal of 25154378328 is 82387345152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524049525 + ... + 524049572.

Almost surely, 2^25154378328 is an apocalyptic number.

It is an amenable number.

25154378328 is an abundant number, since it is smaller than the sum of its proper divisors (37731567552).

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

25154378328 is a wasteful number, since it uses less digits than its factorization.

25154378328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048099106 (or 1048099102 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The spelling of 25154378328 in words is "twenty-five billion, one hundred fifty-four million, three hundred seventy-eight thousand, three hundred twenty-eight".