25020222266 has 16 divisors (see below), whose sum is σ = 40431849864. Its totient is φ = 11543632704.

The previous prime is 25020222259. The next prime is 25020222281. The reversal of 25020222266 is 66222202052.

It can be written as a sum of positive squares in 4 ways, for example, as 24078039241 + 942183025 = 155171^2 + 30695^2 .

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, 99305 + ... + 244748.

Almost surely, 2^25020222266 is an apocalyptic number.

25020222266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25020222266 is a deficient number, since it is larger than the sum of its proper divisors (15411627598).

25020222266 is a wasteful number, since it uses less digits than its factorization.

25020222266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346865.

The product of its (nonzero) digits is 11520, while the sum is 29.

The spelling of 25020222266 in words is "twenty-five billion, twenty million, two hundred twenty-two thousand, two hundred sixty-six".