2551190725 has 18 divisors (see below), whose sum is σ = 3268846770. Its totient is φ = 1975096800.

The previous prime is 2551190723. The next prime is 2551190729. The reversal of 2551190725 is 5270911552.

It can be written as a sum of positive squares in 3 ways, for example, as 47789569 + 2503401156 = 6913^2 + 50034^2 .

It is not a de Polignac number, because 2551190725 - 2¹ = 2551190723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551190723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29070 + ... + 77119.

Almost surely, 2^2551190725 is an apocalyptic number.

2551190725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2551190725 is a deficient number, since it is larger than the sum of its proper divisors (717656045).

2551190725 is a wasteful number, since it uses less digits than its factorization.

2551190725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106261 (or 106225 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 2551190725 is about 50509.3132501324. The cubic root of 2551190725 is about 1366.4098239988.

The spelling of 2551190725 in words is "two billion, five hundred fifty-one million, one hundred ninety thousand, seven hundred twenty-five".