25745434530 has 32 divisors (see below), whose sum is σ = 65041099200. Its totient is φ = 6504109632.

The previous prime is 25745434529. The next prime is 25745434531. The reversal of 25745434530 is 3543454752.

It is an interprime number because it is at equal distance from previous prime (25745434529) and next prime (25745434531).

It is not an unprimeable number, because it can be changed into a prime (25745434531) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22583145 + ... + 22584284.

It is an arithmetic number, because the mean of its divisors is an integer number (2032534350).

Almost surely, 2^25745434530 is an apocalyptic number.

25745434530 is an abundant number, since it is smaller than the sum of its proper divisors (39295664670).

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

25745434530 is a wasteful number, since it uses less digits than its factorization.

25745434530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45167458.

The product of its (nonzero) digits is 1008000, while the sum is 42.

The spelling of 25745434530 in words is "twenty-five billion, seven hundred forty-five million, four hundred thirty-four thousand, five hundred thirty".