25623677477 has 8 divisors (see below), whose sum is σ = 25892781600. Its totient is φ = 25354875600.

The previous prime is 25623677473. The next prime is 25623677491. The reversal of 25623677477 is 77477632652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25623677477 - 2² = 25623677473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25623677473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96938 + ... + 246260.

It is an arithmetic number, because the mean of its divisors is an integer number (3236597700).

Almost surely, 2^25623677477 is an apocalyptic number.

It is an amenable number.

25623677477 is a deficient number, since it is larger than the sum of its proper divisors (269104123).

25623677477 is a wasteful number, since it uses less digits than its factorization.

25623677477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151123.

The product of its digits is 20744640, while the sum is 56.

The spelling of 25623677477 in words is "twenty-five billion, six hundred twenty-three million, six hundred seventy-seven thousand, four hundred seventy-seven".