25534214405 has 64 divisors (see below), whose sum is σ = 37289963520. Its totient is φ = 16406624256.

The previous prime is 25534214389. The next prime is 25534214441. The reversal of 25534214405 is 50441243552.

It is a cyclic number.

It is not a de Polignac number, because 25534214405 - 2⁴ = 25534214389 is a prime.

It is a super-2 number, since 2×25534214405² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16764974 + ... + 16766496.

It is an arithmetic number, because the mean of its divisors is an integer number (582655680).

Almost surely, 2^25534214405 is an apocalyptic number.

It is an amenable number.

25534214405 is a deficient number, since it is larger than the sum of its proper divisors (11755749115).

25534214405 is a wasteful number, since it uses less digits than its factorization.

25534214405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 25534214405 its reverse (50441243552), we get a palindrome (75975457957).

The spelling of 25534214405 in words is "twenty-five billion, five hundred thirty-four million, two hundred fourteen thousand, four hundred five".