25401152405 has 16 divisors (see below), whose sum is σ = 30585392640. Its totient is φ = 20251690368.

The previous prime is 25401152401. The next prime is 25401152407. The reversal of 25401152405 is 50425110452.

It is a cyclic number.

It is not a de Polignac number, because 25401152405 - 2² = 25401152401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401152401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2085764 + ... + 2097906.

It is an arithmetic number, because the mean of its divisors is an integer number (1911587040).

Almost surely, 2^25401152405 is an apocalyptic number.

It is an amenable number.

25401152405 is a deficient number, since it is larger than the sum of its proper divisors (5184240235).

25401152405 is a wasteful number, since it uses less digits than its factorization.

25401152405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13540.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 25401152405 its reverse (50425110452), we get a palindrome (75826262857).

The spelling of 25401152405 in words is "twenty-five billion, four hundred one million, one hundred fifty-two thousand, four hundred five".