26981625 has 64 divisors (see below), whose sum is σ = 50798592. Its totient is φ = 12600000.

The previous prime is 26981609. The next prime is 26981627. The reversal of 26981625 is 52618962.

It is not a de Polignac number, because 26981625 - 2⁴ = 26981609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26981627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127770 + ... + 127980.

It is an arithmetic number, because the mean of its divisors is an integer number (793728).

Almost surely, 2^26981625 is an apocalyptic number.

26981625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26981625 is a deficient number, since it is larger than the sum of its proper divisors (23816967).

26981625 is a wasteful number, since it uses less digits than its factorization.

26981625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 261 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 26981625 is about 5194.3839865763. The cubic root of 26981625 is about 299.9319290001.

The spelling of 26981625 in words is "twenty-six million, nine hundred eighty-one thousand, six hundred twenty-five".