25056082309 has 8 divisors (see below), whose sum is σ = 26148987072. Its totient is φ = 23963470080.

The previous prime is 25056082087. The next prime is 25056082543. The reversal of 25056082309 is 90328065052.

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 25056082309 - 2⁹ = 25056081797 is a prime.

It is a lonely number, since its distance to closest prime (25056082087) sets a new record.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25056085309) 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, 111894 + ... + 250264.

It is an arithmetic number, because the mean of its divisors is an integer number (3268623384).

Almost surely, 2^25056082309 is an apocalyptic number.

It is an amenable number.

25056082309 is a deficient number, since it is larger than the sum of its proper divisors (1092904763).

25056082309 is a wasteful number, since it uses less digits than its factorization.

25056082309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146267.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 25056082309 in words is "twenty-five billion, fifty-six million, eighty-two thousand, three hundred nine".