25001552394 has 64 divisors (see below), whose sum is σ = 68380327680. Its totient is φ = 6593814720.

The previous prime is 25001552369. The next prime is 25001552417. The reversal of 25001552394 is 49325510052.

It is a happy number.

25001552394 is a `hidden beast` number, since 2 + 500 + 15 + 52 + 3 + 94 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2538997 + ... + 2548824.

It is an arithmetic number, because the mean of its divisors is an integer number (1068442620).

Almost surely, 2^25001552394 is an apocalyptic number.

25001552394 is an abundant number, since it is smaller than the sum of its proper divisors (43378775286).

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

25001552394 is a wasteful number, since it uses less digits than its factorization.

25001552394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087852 (or 5087846 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 25001552394 in words is "twenty-five billion, one million, five hundred fifty-two thousand, three hundred ninety-four".