25002530505 has 24 divisors (see below), whose sum is σ = 43341866568. Its totient is φ = 13333406976.

The previous prime is 25002530459. The next prime is 25002530569. The reversal of 25002530505 is 50503520052.

It can be written as a sum of positive squares in 4 ways, for example, as 2337529104 + 22665001401 = 48348^2 + 150549^2 .

It is not a de Polignac number, because 25002530505 - 2²⁵ = 24968976073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623749 + ... + 662621.

It is an arithmetic number, because the mean of its divisors is an integer number (1805911107).

Almost surely, 2^25002530505 is an apocalyptic number.

It is an amenable number.

25002530505 is a deficient number, since it is larger than the sum of its proper divisors (18339336063).

25002530505 is a wasteful number, since it uses less digits than its factorization.

25002530505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53177 (or 53174 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The spelling of 25002530505 in words is "twenty-five billion, two million, five hundred thirty thousand, five hundred five".