25357746340 has 12 divisors (see below), whose sum is σ = 53251267356. Its totient is φ = 10143098528.

The previous prime is 25357746331. The next prime is 25357746361. The reversal of 25357746340 is 4364775352.

It can be written as a sum of positive squares in 2 ways, for example, as 17220263076 + 8137483264 = 131226^2 + 90208^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633943639 + ... + 633943678.

It is an arithmetic number, because the mean of its divisors is an integer number (4437605613).

Almost surely, 2^25357746340 is an apocalyptic number.

25357746340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25357746340 is an abundant number, since it is smaller than the sum of its proper divisors (27893521016).

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

25357746340 is a wasteful number, since it uses less digits than its factorization.

25357746340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267887326 (or 1267887324 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 46.

The spelling of 25357746340 in words is "twenty-five billion, three hundred fifty-seven million, seven hundred forty-six thousand, three hundred forty".