25621354051 has 8 divisors (see below), whose sum is σ = 25778085984. Its totient is φ = 25465084800.

The previous prime is 25621354013. The next prime is 25621354093. The reversal of 25621354051 is 15045312652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25621354051 is a prime.

It is a super-2 number, since 2×25621354051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25621353998 and 25621354016.

It is not an unprimeable number, because it can be changed into a prime (25621354151) 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, 4255 + ... + 226408.

It is an arithmetic number, because the mean of its divisors is an integer number (3222260748).

Almost surely, 2^25621354051 is an apocalyptic number.

25621354051 is a deficient number, since it is larger than the sum of its proper divisors (156731933).

25621354051 is a wasteful number, since it uses less digits than its factorization.

25621354051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231341.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 25621354051 in words is "twenty-five billion, six hundred twenty-one million, three hundred fifty-four thousand, fifty-one".