1011545625 has 40 divisors (see below), whose sum is σ = 1706953600. Its totient is φ = 532584000.

The previous prime is 1011545581. The next prime is 1011545629. The reversal of 1011545625 is 5265451101.

It is not a de Polignac number, because 1011545625 - 2⁹ = 1011545113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011545592 and 1011545601.

It is not an unprimeable number, because it can be changed into a prime (1011545629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 144711 + ... + 151539.

It is an arithmetic number, because the mean of its divisors is an integer number (42673840).

Almost surely, 2^1011545625 is an apocalyptic number.

1011545625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011545625 is a deficient number, since it is larger than the sum of its proper divisors (695407975).

1011545625 is an frugal number, since it uses more digits than its factorization.

1011545625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931 (or 6916 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1011545625 is about 31804.8050614997. The cubic root of 1011545625 is about 1003.8338246716.

Adding to 1011545625 its reverse (5265451101), we get a palindrome (6276996726).

The spelling of 1011545625 in words is "one billion, eleven million, five hundred forty-five thousand, six hundred twenty-five".