2640276277525 has 12 divisors (see below), whose sum is σ = 3274466860192. Its totient is φ = 2111882779440.

The previous prime is 2640276277523. The next prime is 2640276277543. The reversal of 2640276277525 is 5257726720462.

It is a happy number.

It is not a de Polignac number, because 2640276277525 - 2¹ = 2640276277523 is a prime.

It is a super-2 number, since 2×2640276277525² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640276277523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8296767 + ... + 8609116.

Almost surely, 2^{2640276277525} is an apocalyptic number.

2640276277525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2640276277525 is a deficient number, since it is larger than the sum of its proper divisors (634190582667).

2640276277525 is a wasteful number, since it uses less digits than its factorization.

2640276277525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16912140 (or 16912135 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 55.

The spelling of 2640276277525 in words is "two trillion, six hundred forty billion, two hundred seventy-six million, two hundred seventy-seven thousand, five hundred twenty-five".