25216144534 has 16 divisors (see below), whose sum is σ = 43432551936. Its totient is φ = 10755700200.

The previous prime is 25216144529. The next prime is 25216144571. The reversal of 25216144534 is 43544161252.

It is a junction number, because it is equal to n+sod(n) for n = 25216144493 and 25216144502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4265182 + ... + 4271089.

It is an arithmetic number, because the mean of its divisors is an integer number (2714534496).

Almost surely, 2^25216144534 is an apocalyptic number.

25216144534 is a deficient number, since it is larger than the sum of its proper divisors (18216407402).

25216144534 is a wasteful number, since it uses less digits than its factorization.

25216144534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536491.

The product of its digits is 115200, while the sum is 37.

The spelling of 25216144534 in words is "twenty-five billion, two hundred sixteen million, one hundred forty-four thousand, five hundred thirty-four".