25423353554 has 16 divisors (see below), whose sum is σ = 40763640960. Its totient is φ = 11862433440.

The previous prime is 25423353547. The next prime is 25423353559. The reversal of 25423353554 is 45535332452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (25423353559) 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, 6738134 + ... + 6741905.

It is an arithmetic number, because the mean of its divisors is an integer number (2547727560).

Almost surely, 2^25423353554 is an apocalyptic number.

25423353554 is a deficient number, since it is larger than the sum of its proper divisors (15340287406).

25423353554 is a wasteful number, since it uses less digits than its factorization.

25423353554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13480105.

The product of its digits is 1080000, while the sum is 41.

The spelling of 25423353554 in words is "twenty-five billion, four hundred twenty-three million, three hundred fifty-three thousand, five hundred fifty-four".