61622525 has 6 divisors (see below), whose sum is σ = 76411962. Its totient is φ = 49298000.

The previous prime is 61622507. The next prime is 61622527. The reversal of 61622525 is 52522616.

It can be written as a sum of positive squares in 3 ways, for example, as 22146436 + 39476089 = 4706^2 + 6283^2 .

It is not a de Polignac number, because 61622525 - 2¹² = 61618429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61622527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1232426 + ... + 1232475.

It is an arithmetic number, because the mean of its divisors is an integer number (12735327).

Almost surely, 2^61622525 is an apocalyptic number.

It is an amenable number.

61622525 is a deficient number, since it is larger than the sum of its proper divisors (14789437).

61622525 is a wasteful number, since it uses less digits than its factorization.

61622525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464911 (or 2464906 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 61622525 is about 7850.0015923565. The cubic root of 61622525 is about 394.9842967640.

Subtracting from 61622525 its reverse (52522616), we obtain a palindrome (9099909).

It can be divided in two parts, 616225 and 25, that multiplied together give a square (15405625 = 3925²).

The spelling of 61622525 in words is "sixty-one million, six hundred twenty-two thousand, five hundred twenty-five".