7257906025 has 6 divisors (see below), whose sum is σ = 8999803502. Its totient is φ = 5806324800.

The previous prime is 7257906017. The next prime is 7257906043. The reversal of 7257906025 is 5206097527.

It can be written as a sum of positive squares in 3 ways, for example, as 1566259776 + 5691646249 = 39576^2 + 75443^2 .

It is not a de Polignac number, because 7257906025 - 2³ = 7257906017 is a prime.

It is a Duffinian 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, 145158096 + ... + 145158145.

Almost surely, 2^7257906025 is an apocalyptic number.

It is an amenable number.

7257906025 is a deficient number, since it is larger than the sum of its proper divisors (1741897477).

7257906025 is a wasteful number, since it uses less digits than its factorization.

7257906025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290316251 (or 290316246 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 7257906025 is about 85193.3449572207. The cubic root of 7257906025 is about 1936.1415876722.

The spelling of 7257906025 in words is "seven billion, two hundred fifty-seven million, nine hundred six thousand, twenty-five".