25073139025 has 27 divisors (see below), whose sum is σ = 34185941083. Its totient is φ = 18228676400.

The previous prime is 25073138999. The next prime is 25073139037. The reversal of 25073139025 is 52093137052.

The square root of 25073139025 is 158345.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9026330049 + 16046808976 = 95007^2 + 126676^2 .

It is not a de Polignac number, because 25073139025 - 2⁷ = 25073138897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8707536 + ... + 8710414.

Almost surely, 2^25073139025 is an apocalyptic number.

25073139025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25073139025 is the 158345-th square number.

25073139025 is the 79173-rd centered octagonal number.

It is an amenable number.

25073139025 is a deficient number, since it is larger than the sum of its proper divisors (9112802058).

25073139025 is an frugal number, since it uses more digits than its factorization.

25073139025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790 (or 2895 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The spelling of 25073139025 in words is "twenty-five billion, seventy-three million, one hundred thirty-nine thousand, twenty-five".