25314475721 has 8 divisors (see below), whose sum is σ = 26169921024. Its totient is φ = 24461458560.

The previous prime is 25314475699. The next prime is 25314475733. The reversal of 25314475721 is 12757441352.

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 25314475721 - 2⁶ = 25314475657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25314475621) 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, 585821 + ... + 627546.

It is an arithmetic number, because the mean of its divisors is an integer number (3271240128).

Almost surely, 2^25314475721 is an apocalyptic number.

It is an amenable number.

25314475721 is a deficient number, since it is larger than the sum of its proper divisors (855445303).

25314475721 is a wasteful number, since it uses less digits than its factorization.

25314475721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214071.

The product of its digits is 235200, while the sum is 41.

The spelling of 25314475721 in words is "twenty-five billion, three hundred fourteen million, four hundred seventy-five thousand, seven hundred twenty-one".