25097890 has 16 divisors (see below), whose sum is σ = 45241920. Its totient is φ = 10024560.

The previous prime is 25097887. The next prime is 25097893. The reversal of 25097890 is 9879052.

It is an interprime number because it is at equal distance from previous prime (25097887) and next prime (25097893).

It is not an unprimeable number, because it can be changed into a prime (25097893) 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, 7825 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (2827620).

Almost surely, 2^25097890 is an apocalyptic number.

25097890 is a deficient number, since it is larger than the sum of its proper divisors (20144030).

25097890 is a wasteful number, since it uses less digits than its factorization.

25097890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 25097890 is about 5009.7794362626. The cubic root of 25097890 is about 292.7829195771.

The spelling of 25097890 in words is "twenty-five million, ninety-seven thousand, eight hundred ninety".