2251240123525 has 6 divisors (see below), whose sum is σ = 2791537753202. Its totient is φ = 1800992098800.

The previous prime is 2251240123501. The next prime is 2251240123603. The reversal of 2251240123525 is 5253210421522.

It can be written as a sum of positive squares in 3 ways, for example, as 3162712644 + 2248077410881 = 56238^2 + 1499359^2 .

It is not a de Polignac number, because 2251240123525 - 2⁵ = 2251240123493 is a prime.

It is a Duffinian number.

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, 45024802446 + ... + 45024802495.

Almost surely, 2^{2251240123525} is an apocalyptic number.

2251240123525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2251240123525 is a deficient number, since it is larger than the sum of its proper divisors (540297629677).

2251240123525 is an equidigital number, since it uses as much as digits as its factorization.

2251240123525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90049604951 (or 90049604946 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 2251240123525 in words is "two trillion, two hundred fifty-one billion, two hundred forty million, one hundred twenty-three thousand, five hundred twenty-five".