25005535401 has 48 divisors (see below), whose sum is σ = 42332234688. Its totient is φ = 12983040000.

The previous prime is 25005535367. The next prime is 25005535411. The reversal of 25005535401 is 10453550052.

It is a happy number.

It is not a de Polignac number, because 25005535401 - 2⁶ = 25005535337 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25005535411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4850041 + ... + 4855193.

It is an arithmetic number, because the mean of its divisors is an integer number (881921556).

Almost surely, 2^25005535401 is an apocalyptic number.

25005535401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25005535401 is a deficient number, since it is larger than the sum of its proper divisors (17326699287).

25005535401 is a wasteful number, since it uses less digits than its factorization.

25005535401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182 (or 8175 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 25005535401 in words is "twenty-five billion, five million, five hundred thirty-five thousand, four hundred one".