25320020001 has 8 divisors (see below), whose sum is σ = 33764497440. Its totient is φ = 16877777952.

The previous prime is 25320019969. The next prime is 25320020003. The reversal of 25320020001 is 10002002352.

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

It is not a de Polignac number, because 25320020001 - 2⁵ = 25320019969 is a prime.

It is a super-2 number, since 2×25320020001² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25320020003) 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, 532236 + ... + 577853.

It is an arithmetic number, because the mean of its divisors is an integer number (4220562180).

Almost surely, 2^25320020001 is an apocalyptic number.

It is an amenable number.

25320020001 is a deficient number, since it is larger than the sum of its proper divisors (8444477439).

25320020001 is a wasteful number, since it uses less digits than its factorization.

25320020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117695.

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 25320020001 its reverse (10002002352), we get a palindrome (35322022353).

The spelling of 25320020001 in words is "twenty-five billion, three hundred twenty million, twenty thousand, one".