61525440253 has 8 divisors (see below), whose sum is σ = 61876887776. Its totient is φ = 61174990800.

The previous prime is 61525440199. The next prime is 61525440281. The reversal of 61525440253 is 35204452516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61525440253 - 2²⁵ = 61491885821 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 (61525440853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125703 + ... + 372628.

It is an arithmetic number, because the mean of its divisors is an integer number (7734610972).

Almost surely, 2^61525440253 is an apocalyptic number.

It is an amenable number.

61525440253 is a deficient number, since it is larger than the sum of its proper divisors (351447523).

61525440253 is a wasteful number, since it uses less digits than its factorization.

61525440253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499035.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 61525440253 its reverse (35204452516), we get a palindrome (96729892769).

The spelling of 61525440253 in words is "sixty-one billion, five hundred twenty-five million, four hundred forty thousand, two hundred fifty-three".