1010525721 has 4 divisors (see below), whose sum is σ = 1347367632. Its totient is φ = 673683812.

The previous prime is 1010525701. The next prime is 1010525731. The reversal of 1010525721 is 1275250101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1010525721 - 2⁶ = 1010525657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010525691 and 1010525700.

It is not an unprimeable number, because it can be changed into a prime (1010525701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168420951 + ... + 168420956.

It is an arithmetic number, because the mean of its divisors is an integer number (336841908).

Almost surely, 2^1010525721 is an apocalyptic number.

It is an amenable number.

1010525721 is a deficient number, since it is larger than the sum of its proper divisors (336841911).

1010525721 is an equidigital number, since it uses as much as digits as its factorization.

1010525721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336841910.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 1010525721 is about 31788.7672142221. The cubic root of 1010525721 is about 1003.4963350610.

Adding to 1010525721 its reverse (1275250101), we get a palindrome (2285775822).

The spelling of 1010525721 in words is "one billion, ten million, five hundred twenty-five thousand, seven hundred twenty-one".