1025423290 has 16 divisors (see below), whose sum is σ = 1866502440. Its totient is φ = 405560320.

The previous prime is 1025423281. The next prime is 1025423317. The reversal of 1025423290 is 923245201.

It can be written as a sum of positive squares in 4 ways, for example, as 873616249 + 151807041 = 29557^2 + 12321^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575191 + ... + 576970.

Almost surely, 2^1025423290 is an apocalyptic number.

1025423290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025423290 is a deficient number, since it is larger than the sum of its proper divisors (841079150).

1025423290 is a wasteful number, since it uses less digits than its factorization.

1025423290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152257.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1025423290 is about 32022.2311839759. The cubic root of 1025423290 is about 1008.4036114910.

Adding to 1025423290 its reverse (923245201), we get a palindrome (1948668491).

The spelling of 1025423290 in words is "one billion, twenty-five million, four hundred twenty-three thousand, two hundred ninety".