2507642457 has 4 divisors (see below), whose sum is σ = 3343523280. Its totient is φ = 1671761636.

The previous prime is 2507642453. The next prime is 2507642461. The reversal of 2507642457 is 7542467052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2507642453) and next prime (2507642461).

It is a cyclic number.

It is not a de Polignac number, because 2507642457 - 2² = 2507642453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2507642453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417940407 + ... + 417940412.

It is an arithmetic number, because the mean of its divisors is an integer number (835880820).

Almost surely, 2^2507642457 is an apocalyptic number.

It is an amenable number.

2507642457 is a deficient number, since it is larger than the sum of its proper divisors (835880823).

2507642457 is an equidigital number, since it uses as much as digits as its factorization.

2507642457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835880822.

The product of its (nonzero) digits is 470400, while the sum is 42.

The square root of 2507642457 is about 50076.3662519556. The cubic root of 2507642457 is about 1358.5903894234.

The spelling of 2507642457 in words is "two billion, five hundred seven million, six hundred forty-two thousand, four hundred fifty-seven".