25745321730 has 64 divisors (see below), whose sum is σ = 65442504960. Its totient is φ = 6459684864.

The previous prime is 25745321671. The next prime is 25745321761. The reversal of 25745321730 is 3712354752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2758011 + ... + 2767329.

It is an arithmetic number, because the mean of its divisors is an integer number (1022539140).

Almost surely, 2^25745321730 is an apocalyptic number.

25745321730 is an abundant number, since it is smaller than the sum of its proper divisors (39697183230).

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

25745321730 is a wasteful number, since it uses less digits than its factorization.

25745321730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14763.

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 25745321730 in words is "twenty-five billion, seven hundred forty-five million, three hundred twenty-one thousand, seven hundred thirty".