25012755138 has 16 divisors (see below), whose sum is σ = 57172011840. Its totient is φ = 7146501456.

The previous prime is 25012755121. The next prime is 25012755191. The reversal of 25012755138 is 83155721052.

It is a junction number, because it is equal to n+sod(n) for n = 25012755096 and 25012755105.

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, 297770853 + ... + 297770936.

It is an arithmetic number, because the mean of its divisors is an integer number (3573250740).

Almost surely, 2^25012755138 is an apocalyptic number.

25012755138 is an abundant number, since it is smaller than the sum of its proper divisors (32159256702).

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

25012755138 is a wasteful number, since it uses less digits than its factorization.

25012755138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595541801.

The product of its (nonzero) digits is 84000, while the sum is 39.

The spelling of 25012755138 in words is "twenty-five billion, twelve million, seven hundred fifty-five thousand, one hundred thirty-eight".