25140136134 has 16 divisors (see below), whose sum is σ = 52014075120. Its totient is φ = 8091078240.

The previous prime is 25140136093. The next prime is 25140136141. The reversal of 25140136134 is 43163104152.

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, 72241597 + ... + 72241944.

It is an arithmetic number, because the mean of its divisors is an integer number (3250879695).

Almost surely, 2^25140136134 is an apocalyptic number.

25140136134 is an abundant number, since it is smaller than the sum of its proper divisors (26873938986).

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

25140136134 is a wasteful number, since it uses less digits than its factorization.

25140136134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144483575.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 25140136134 in words is "twenty-five billion, one hundred forty million, one hundred thirty-six thousand, one hundred thirty-four".