2621025 has 48 divisors (see below), whose sum is σ = 5267520. Its totient is φ = 1267200.

The previous prime is 2621023. The next prime is 2621027. The reversal of 2621025 is 5201262.

2621025 = 204² + 205² + ... + 253².

It is an interprime number because it is at equal distance from previous prime (2621023) and next prime (2621027).

It is not a de Polignac number, because 2621025 - 2¹ = 2621023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2620989 and 2621007.

It is not an unprimeable number, because it can be changed into a prime (2621023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7249 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (109740).

2^2621025 is an apocalyptic number.

2621025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2621025 is an abundant number, since it is smaller than the sum of its proper divisors (2646495).

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

2621025 is a wasteful number, since it uses less digits than its factorization.

2621025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2621025 is about 1618.9579982198. The cubic root of 2621025 is about 137.8765436518.

Adding to 2621025 its reverse (5201262), we get a palindrome (7822287).

The spelling of 2621025 in words is "two million, six hundred twenty-one thousand, twenty-five".