2478925 has 12 divisors (see below), whose sum is σ = 3094420. Its totient is φ = 1969920.

The previous prime is 2478899. The next prime is 2478937. The reversal of 2478925 is 5298742.

It can be written as a sum of positive squares in 6 ways, for example, as 26569 + 2452356 = 163^2 + 1566^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2478925 is a prime.

It is a super-2 number, since 2×2478925² = 12290138311250, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁷ + 4⁵ + 7³ + 8 + 9 + 2¹⁹ + 5⁹ .

Its product of digits (40320) is a multiple of the sum of its prime factors (672).

2478925 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5509 + ... + 5941.

2^2478925 is an apocalyptic number.

2478925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2478925 is a deficient number, since it is larger than the sum of its proper divisors (615495).

2478925 is a wasteful number, since it uses less digits than its factorization.

2478925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 667 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 2478925 is about 1574.4602249660. The cubic root of 2478925 is about 135.3384284416.

It can be divided in two parts, 2478 and 925, that added together give a triangular number (3403 = T₈₂).

The spelling of 2478925 in words is "two million, four hundred seventy-eight thousand, nine hundred twenty-five".