25064261890 has 16 divisors (see below), whose sum is σ = 45120071808. Its totient is φ = 10024726896.

The previous prime is 25064261857. The next prime is 25064261923. The reversal of 25064261890 is 9816246052.

It is an interprime number because it is at equal distance from previous prime (25064261857) and next prime (25064261923).

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, 9642 + ... + 224101.

It is an arithmetic number, because the mean of its divisors is an integer number (2820004488).

Almost surely, 2^25064261890 is an apocalyptic number.

25064261890 is a deficient number, since it is larger than the sum of its proper divisors (20055809918).

25064261890 is a wasteful number, since it uses less digits than its factorization.

25064261890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244473.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 25064261890 in words is "twenty-five billion, sixty-four million, two hundred sixty-one thousand, eight hundred ninety".