2520378725 has 12 divisors (see below), whose sum is σ = 3148086084. Its totient is φ = 2001582720.

The previous prime is 2520378703. The next prime is 2520378727. The reversal of 2520378725 is 5278730252.

It can be written as a sum of positive squares in 6 ways, for example, as 99640324 + 2420738401 = 9982^2 + 49201^2 .

It is not a de Polignac number, because 2520378725 - 2¹⁰ = 2520377701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520378727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364514 + ... + 371363.

It is an arithmetic number, because the mean of its divisors is an integer number (262340507).

Almost surely, 2^2520378725 is an apocalyptic number.

2520378725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2520378725 is a deficient number, since it is larger than the sum of its proper divisors (627707359).

2520378725 is a wasteful number, since it uses less digits than its factorization.

2520378725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736024 (or 736019 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 2520378725 is about 50203.3736416189. The cubic root of 2520378725 is about 1360.8865911988.

The spelling of 2520378725 in words is "two billion, five hundred twenty million, three hundred seventy-eight thousand, seven hundred twenty-five".