2525378613 has 4 divisors (see below), whose sum is σ = 3367171488. Its totient is φ = 1683585740.

The previous prime is 2525378567. The next prime is 2525378627. The reversal of 2525378613 is 3168735252.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2525378613 - 2¹⁸ = 2525116469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525378663) 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, 420896433 + ... + 420896438.

It is an arithmetic number, because the mean of its divisors is an integer number (841792872).

Almost surely, 2^2525378613 is an apocalyptic number.

It is an amenable number.

2525378613 is a deficient number, since it is larger than the sum of its proper divisors (841792875).

2525378613 is an equidigital number, since it uses as much as digits as its factorization.

2525378613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841792874.

The product of its digits is 302400, while the sum is 42.

The square root of 2525378613 is about 50253.1453045479. The cubic root of 2525378613 is about 1361.7858986472.

The spelling of 2525378613 in words is "two billion, five hundred twenty-five million, three hundred seventy-eight thousand, six hundred thirteen".