25051558925 has 6 divisors (see below), whose sum is σ = 31063933098. Its totient is φ = 20041247120.

The previous prime is 25051558841. The next prime is 25051558963. The reversal of 25051558925 is 52985515052.

It can be written as a sum of positive squares in 3 ways, for example, as 5160123556 + 19891435369 = 71834^2 + 141037^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25051558925 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25051558925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501031154 + ... + 501031203.

It is an arithmetic number, because the mean of its divisors is an integer number (5177322183).

Almost surely, 2^25051558925 is an apocalyptic number.

25051558925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25051558925 is a deficient number, since it is larger than the sum of its proper divisors (6012374173).

25051558925 is a wasteful number, since it uses less digits than its factorization.

25051558925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002062367 (or 1002062362 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 47.

The spelling of 25051558925 in words is "twenty-five billion, fifty-one million, five hundred fifty-eight thousand, nine hundred twenty-five".