25266405290 has 16 divisors (see below), whose sum is σ = 51976605312. Its totient is φ = 8662767504.

The previous prime is 25266405287. The next prime is 25266405299. The reversal of 25266405290 is 9250466252.

It is not an unprimeable number, because it can be changed into a prime (25266405299) 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, 180474254 + ... + 180474393.

It is an arithmetic number, because the mean of its divisors is an integer number (3248537832).

Almost surely, 2^25266405290 is an apocalyptic number.

25266405290 is an abundant number, since it is smaller than the sum of its proper divisors (26710200022).

25266405290 is a wasteful number, since it uses less digits than its factorization.

25266405290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360948661.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 25266405290 in words is "twenty-five billion, two hundred sixty-six million, four hundred five thousand, two hundred ninety".