25145652694 has 4 divisors (see below), whose sum is σ = 37718479044. Its totient is φ = 12572826346.

The previous prime is 25145652691. The next prime is 25145652709. The reversal of 25145652694 is 49625654152.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25145652691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6286413172 + ... + 6286413175.

It is an arithmetic number, because the mean of its divisors is an integer number (9429619761).

Almost surely, 2^25145652694 is an apocalyptic number.

25145652694 is a deficient number, since it is larger than the sum of its proper divisors (12572826350).

25145652694 is a wasteful number, since it uses less digits than its factorization.

25145652694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12572826349.

The product of its digits is 2592000, while the sum is 49.

The spelling of 25145652694 in words is "twenty-five billion, one hundred forty-five million, six hundred fifty-two thousand, six hundred ninety-four".