11387025 has 72 divisors (see below), whose sum is σ = 23357880. Its totient is φ = 5253120.

The previous prime is 11387021. The next prime is 11387087. The reversal of 11387025 is 52078311.

It can be written as a sum of positive squares in 12 ways, for example, as 1140624 + 10246401 = 1068^2 + 3201^2 .

It is not a de Polignac number, because 11387025 - 2² = 11387021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11387025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 49611 + ... + 49839.

It is an arithmetic number, because the mean of its divisors is an integer number (324415).

Almost surely, 2^11387025 is an apocalyptic number.

11387025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11387025 is an abundant number, since it is smaller than the sum of its proper divisors (11970855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11387025 is a wasteful number, since it uses less digits than its factorization.

11387025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 11387025 is about 3374.4666245201. The cubic root of 11387025 is about 224.9762937987.

The spelling of 11387025 in words is "eleven million, three hundred eighty-seven thousand, twenty-five".